In a week-long series of articles, Citiscope explores how Bristol's eccentric mayor aims to create “an exemplar medium-sized city.” With doses of fun, innovation and fearlessness, the former architect and businessman is changing the city's culture.

Minibus drivers in Johannesburg, South Africa, were not happy about plans to build a city-wide bus rapid transit system, worrying it would take their business away. After sometimes violent debates, the drivers have compromised with the city.

Brazilian slums represent huge segments of the country's urban population, especially in Sao Paulo. Upgrading them into economically sustainable segments of the city is a challenge, but a new toolkit offers a path to success.